Detachment structure for large-sized joint bearing

The utility model discloses a detachment structure for a large-sized joint bearing. The detachment structure comprises an outer ring, an inner ring and a core shaft, wherein a hollow cylindrical hole is formed in the center of the inner ring; the core shaft is sleeved in the central hole of the inner ring and rotates synchronously with the inner ring; the inner ring is sleeved in the outer ring, and the outer spherical surface of the inner ring is matched with the inner spherical surface of the outer ring to rotate; a high-pressure oil injection port is formed on the end face of the inner ring; more than one radial annular oil groove is formed on the inner surface of the inner ring; and the high-pressure oil injection port is communicated with the radial annular oil groove on the inner surface of the inner ring. The utility model has the advantages that the detachment structure is wide in application range, simple in structure and convenient to machine; only the inner ring is machined, and the core shaft is n